Evidently, buyers still fall for the old memory amount trick when choosing graphics cards, and Club 3D isn't late to capitalize on that. The company released a new GeForce GT 640 low-profile double-slot graphics card that crams in 4 GB of GDDR3 memory. Its GPU is clocked at 900 MHz, and memory at 1600 MHz. The 4 GB memory is spread across a 128-bit wide interface. Display outputs include dual-link DVI, HDMI, and D-Sub. Based on the 28 nm GK107 GPU, the GeForce GT 640 packs 384 CUDA cores. Here's the kicker - it is priced at 177€.

It's probably the lowest grade DDR3 the could get on the cheap, then indicated with the reduced effective clock speed they use. Like that it's at least it's a half-height, Nvidia should have release the reference 640 based solely on the purpose of SFF that might helped justify that MSRP price.

Well a AWD/4WD in a crap car that started as underpowered… it’s not, because it doesn’t make it more effective, the added weight and gearing slows it down keeping you out of problem only in those really averse conditions… the rest of the time you're slow and not as efficient. When done right there’s a lot of good, slapped on as an afterthought it’s just bad.
This said by a guy who knows just how wild a AWD CVT Subaru Justy could be, not that owned one but plenty fun windshield time in cars we were expected to drive hard.